GCD of 428, 771, 68, 203 Calculator

Given Input numbers are 428, 771, 68, 203

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 428

List of positive integer divisors of 428 that divides 428 without a remainder.

1, 2, 4, 107, 214, 428

Divisors of 771

List of positive integer divisors of 771 that divides 771 without a remainder.

1, 3, 257, 771

Divisors of 68

List of positive integer divisors of 68 that divides 68 without a remainder.

1, 2, 4, 17, 34, 68

Divisors of 203

List of positive integer divisors of 203 that divides 203 without a remainder.

1, 7, 29, 203

Greatest Common Divisior

We found the divisors of 428, 771, 68, 203 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 428, 771, 68, 203 is 1.

Therefore, GCD of numbers 428, 771, 68, 203 is 1

Given Input Data is 428, 771, 68, 203

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 428 is 2 x 2 x 107

Prime Factorization of 771 is 3 x 257

Prime Factorization of 68 is 2 x 2 x 17

Prime Factorization of 203 is 7 x 29

The above numbers do not have any common prime factor. So GCD is 1

Step1:

Let's calculate the GCD of first two numbers

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(428, 771) = 329988

GCD(428, 771) = ( 428 x 771 ) / 329988

GCD(428, 771) = 329988 / 329988

GCD(428, 771) = 1

Step2:

Here we consider the GCD from the above i.e. 1 as first number and the next as 68

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 68) = 68

GCD(1, 68) = ( 1 x 68 ) / 68

GCD(1, 68) = 68 / 68

GCD(1, 68) = 1

Step3:

Here we consider the GCD from the above i.e. 1 as first number and the next as 203

The formula of GCD is GCD(a, b) = ( a x b) / LCM(a, b)

LCM(1, 203) = 203

GCD(1, 203) = ( 1 x 203 ) / 203

GCD(1, 203) = 203 / 203

GCD(1, 203) = 1

GCD of 428, 771, 68, 203 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 999, 390, 53, 793
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• GCD of 304, 432, 98, 656
• GCD of 438, 553, 88, 143
• GCD of 601, 835, 18, 488

1. What is the GCD of 428, 771, 68, 203?

GCD of 428, 771, 68, 203 is 1

2. Where do I get the detailed procedure to find GCD of 428, 771, 68, 203?

You can find a detailed procedure to find GCD of 428, 771, 68, 203 on our page.

3. How to find GCD of 428, 771, 68, 203 on a calculator?

You can find the GCD of 428, 771, 68, 203 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.